So I bought Farbin's euroweaves.

[Danny]

^good info

[MR 325]

I am disappointed.

[rav320uk]

Correct size for the wheels is 205/55/15, keeps the speedo reading correct.:D

[FredK]

I have always run "undersized" tires because you can't get "extreme" performance tires that have the correct height for an E30.

I run 225/45 R-S3s. They last around 12-15K miles or so with a mix of DD and frequent autocrossing.

Honestly one of my favorite tires were 205/50R15 Bridgestone RE-11s. The sidewall IMO is more communicative than the R-S3s which are rather squishy.

[nando]

you can get RA1s and R888s in 225/50-15 ;)

[F34R]

you can get RA1s and R888s in 225/50-15 ;)

Came here to post this the RA-1, Nando beat me to it. But they have amazing reviews and are sticky as a mofo.
I am also going to be running a 15" for track weekends. 225/50/15 is the size you want. You can see from Fun's they look a little off. Also planning on RA-1 or the R888.

And why euroweaves? I thought your e30 looked amazing with 17s

[nando]

lighter wheels, cheaper tires.

[Jonny Cash]

225-50 is too big for 7" with an ra1. They run wider than your average street tire.

Check out the spece30 images to get an idea of 205-50 on 7" wheel. Even rt615-k (which are even better for dual use, suprisingly pretty good on the track), will run a bit wide- stick with 205 unless its 40/45 AR, then you can get away with 225.

[nando]

no, it's not. 7" is actually the wheel width that Toyo highlights in their reccomended fitments.

http://toyotires.com/tire/pattern/proxes-ra1

it's so annoying when people spout crap like that. everyone thinks you need a 9" wheel to run a 225 tire. Just look at what the manufacturer says.

[Jonny Cash]

wait dont confuse me with the average person on this site.
I dont say anything unless I have direct hands on experience with it.
In this case Ive mixed and matched many different ra1's with many different sized wheels. But i understand youre damaged by the knuckleheaded content on this site so I wont take it personal. Have a nice day.

PS.
Yes you can swing it but its not optimal. The HIGHLIGHTED widths are those that are optimal. Does he want the best performance or does he want whats going to look the nicest in his wheel-well.....

[nando]

yes. 7" is highlighted, meaning it's optimal for their 225/50-15..

[Brian D]

Does he want the best performance or does he want whats going to look the nicest in his wheel-well.....

For this place, I'd say about 10%/90% split on that.

http://www.corner-carvers.com/forums/showthread.php?t=46460

Nando, a lot of people would disagree with what you're saying. People with actual experience timing combinations, not just reading off a spec sheet. I know you run your car, you know better. Will it fit, yes. Is it optimal for performance, no.

[FunfGan]

You don't always want the chunkiest tire to run the best lap times/ get the best performance. Sidewall gets "squishy". I my experience, square tires are the best mix of performance.

[FunfGan]

For instance, an undersized 225/45 on a 15x8. So just imagine a tire that runs larger, on a inch thinner wheel.

[nando]

race tires have much stiffer sidewalls than street tires. yes, I've also run 235s on a 7.5 and 225s on a 6.5. neither were "slow" or "squishy".